Wheel brake structure



c. HOLL ER'ITH I WHEEL BRAKE STRUCTURE Filed March 18, 1940 9,. EHAHLEE HULLEHITH awe/whorl Patented Sept. 22, 1942 I oN ir-Eo STATE s PATENT- I OFFICE WHEEL BRAKE STRUCTURE Charles Hollerith, Jackson, Mich., 'assignor to Hayes Industries, Inc., Jackson, Mich., a corporation of Michigan Application March 1s, 1940, Serial No. 324,52:

1 Claim.

The present invention relates to brake structure for wheels and more particularly to a brake structure adapted for use on aircraft landing wheels In general, the present invention is concerned with an improved arrangement for the support of the brake assembly, having particular reference to brake and wheel combination in which a brake is located upon the outer side of the wheel assembly and a sleeve having supported with respect thereto a radial flange, the radial flange having connections for supporting the web against axialmovementand the sleeve supportmg the web radially, together with means for clamping the sleeve and thus th brake assembly in assembled relation with respect to the wheel and axle.

A still further object of the invention is to accurately center a'brake structurewith respect to its d l These andbther' objects relating to the constructionfarrangement and combination of the parts will be apparent from the following speciflcation when taken with the accompanying drawing in whichthe figures-disclose one-half of a vertical sectionoi an airplane wheel together connected to rings IS and 20, which are in turn supported by ring-shaped webs 2| and 22. The wheel I is supported on bearings 24 from an axle 25. Outer races 26 and 21 of the the present invention bearings 23 and 24 are maintained against inward movement with respect to the wheel-l by shoulders 28 and 29 in the hub 6 of the wheel I. The axle 25 is supported in the landing gear member 30 in some conventional manner and against rotation.

The foregoing structure broadly as such does not comprise any part of the present invention,

relating to the structure for supporting the ring-shaped brake members ,2|

and 22 .with respect to their axle 25 and the landing gear member 30. p

The outer end of the landing gear member 30 is provided with a radially extending annular flange 35. Disposed on the axle 25 and between the landing gear member 311 and'the inner race 36 of the bearing 23 is sleeve 31. As shown particularly in the drawin the sleeve 31 is in cjr;/

cumferential contact with the brake member 2| which is concentricallydisposed thereabout, the sleeve 31 thus serving as a radial support for the brake member 2|. A series of circumferentially spaced bolts serves to hold 35. Between the brake member 2| and the flange 35 is clamped a ring-shaped fairing 39.

At the opposite end of the wheel I is provided a sleeve splined toithe shaft '25 as at 4|. The sleeve 40 has an integral, radially extending 38, only on of which is shown,

' flange 42 to which is clamped, by means or a pluwith its'axle and-axlesupport, illustrating the invention.

Referring particularly to the drawing, the reference character I indicates a wheel having supported is provided with reinforcing ribs 3, 4 and 5 which are spaced circumierentially about the wheel in a'. known manner. The wheel is also provided with a hub 6 and brake drums 1 and B. The

brake drums 1 and 8 have in operative'relation therewith pairs of brake blocks 9 and I0 which are urgable against the drums 1 and 8 by pairs of hydraulic tubes H and I2 respectively. The brake blocks 9 and I0 and hydraulic tubes II and 12 are supported respectively in pairs of channels l5 and I6, havingflanges I1 and I8 respectively.- Thefpalrs oi'fianges l1 and I8, which it will be understood are annular in form, are

thereon a pneumatic tire 2. The wheel I I rality of circumferentially spaced bolts 43, the brake member 22. As shown in the drawing, the

sleev 40 circumferentially contacts with the brake member 22 in the same manner as the sleeve 31 circumferentially contacts with the brake member 2 A nut 44 is threaded onto the, projecting end 45 of the axle 25 and serves to clamp not only the sleeve 4|) against theinner race 46 of the bearing 24 but also serves to urge the entire wheel I to the left. as shown in the drawing to move the inner race 36 of the bearing 23 to clamp the sleeve gear member 30. In this way thewheel is se- 31 against the landing cured to the axle 25 and the brake assemblies,

supported by .the brake members. 2| and 22, are

supported in assembled relation to the wheel I.

,At each end of the It will be observed that the sleeves 31 and 40 are provided with inwardly inclined outer surfaces 48 and 49 respectively against which each grease 2a and the brake member 2| to the flange hub 6 isa grease seal 41, V bearing against the sleeves 31 and 40 respectively.

seal 41 beats. Thus is assembling the entire wheel and brake structures on the axle 25, as one seal 41 adjacent the sleev 31 moves thereover, a tight contact, is obtained, and as the sleeve 40 moves within the other seal 41, a tight contact is obtained. The seals 41 each are provided with an annular flange 55 which is held against a shoulder 56 by a Spring ring 51.

It will be apparent from the foregoing description that the entire brake assemblies may be readgy disassgciated from the wheel I and worked upon 'for either servicing or repairing.

Furthermore, by reason of using the sleeves 3! and 40 the ring-shaped brake member 2| and 22 may be accurately mounted with respect to the.

said wheel for supporting said wheel on said axle for rotation thereabout, a sleeve on said axle between said wheel and said axle support, a radial flange on said axle support, a ring-shaped brake member concentricalLv disposed about said sleeve,

said sleeve being in circumferential engagement with said brake member, a supporting connection is between said flange and saidbrake member, a second sleeve on the opposite end of said wheel splineif to'said axle, a' second radially extending flange on said second sleeve, a second ring-shaped brake member concentrically disposed about said second sleeve, said second ring-shaped brake member being. secured to. said second radiall extending flange, said secondsleeve being in circumferential engagement with said second brake member, said bearing structures having inner and outer races, said wheel having shoulders for receiving said outer races for limiting inner movement of said outer races with respect to said wheel, one of said sleeves being in end contact with one of said inner races and the other of said sleeves being in end contact with the other of said inner races, means supported with respect vto said axle for clamping said second sleeve against its engaging irmer race and for axially moving said wheel to cause said other inner race to clamp said first named sleeve against said axle support whereby said sleeves and brake members are maintained in fixed relation with respect tosaid axle and axle support while at the same tim permitting rotation of said wheel. Y

' CHARLES HOLLERITH. 

